By adopting the wave functions of the charmonium states calculated with the LP and SP models
in our previous work [1]} their strong decay amplitudes can be calculated
by the widely used \(^3P_0\)  model [2]}, [3]}, [4]}, [5]}, [6]}, [7]}, [8]}.
In this method, one assumes that a \(q\bar{q}\)  pair is produced from
the vacuum with the vacuum quantum numbers, \(J^{PC}=0^{++}\) ,
and the decay of the charmonium state takes place by regrouping
the new \(q\bar{q}\)  pair created from the vacuum and the \(c\bar{c}\) 
in the initial state into the outgoing open-charm meson pair via a
rearrangement process.
